METHOD AND DEVICE FOR SHEAR STRESS GENERATION AND FLOW CONTROL

摘要

A method of generating a circular motion of a liquid in a chamber (10), in particular for generating bottom shear stress and flow control in a chamber (10), comprises the steps of providing a spinning device (20) rotating around a central axis (z) in the chamber (10), and subjecting the liquid to a driving force provided by the spinning device (20), so that a liquid column rotating around the central axis (z) is created, wherein the spinning device (20) comprises at least two rotating components (21, 22, 23, 24, 25, 26, 27) concentrically arranged in contact with the liquid, and the rotating components (21, 22, 23, 24, 25, 26, 27) being rotated with different angular velocities. Furthermore, a reaction device (100) is described, which in particular is adapted for subjecting a sample in a liquid to a predetermined shear stress.